refactor(ui): update shared components and add ControlGroup, SidebarContainer

src/shared/ui/Button/IconButton.svelte

@@ -12,6 +12,10 @@ import type { ButtonVariant } from './types';
 type BaseProps = Exclude<ComponentProps<typeof Button>, 'children' | 'iconPosition'>;
 
 interface Props extends BaseProps {
+    /**
+     * Visual variant
+     * @default 'icon'
+     */
     variant?: Extract<ButtonVariant, 'icon' | 'ghost' | 'secondary'>;
 }